The improved liquid transportation and desalination system transports seawater or other saline liquids through a piped distribution system with essentially no moving parts by relying on MHD principles. A fluid pump device comprised of high-strength permanent magnets forming chambers through which the liquid passes and inter-chamber opposing electrode plates with an applied DC potential provide the magnetic flux density and electric current for generating the Lorentz forces acting on the liquid. The fluid pump device may be combined with a desalination filtration device for provision of fresh water near the end of the distribution line without the need for a largescale treatment plant. desalination/filtration occurs through use of nano-porous graphene and/or carbon nanotube media.
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10. A method for transporting and desalinating a liquid, the method steps comprising:
with at least one fluid pump device comprising an inflow manifold and/or an outflow manifold, each manifold comprising a plurality of fins spaced to smooth the turbulence of a liquid flowing therethrough, imparting a motive force on a saline liquid through non-impinging means, whereby the liquid is forcibly transported through at least one chamber of the fluid pump device and through a piping system; and
separating brine from the transported liquid through use of a desalination device to substantially reduce the salinity thereof.
1. A system for transporting and desalinating a liquid, the system comprising:
a saline liquid intake device in fluid communication with at least one fluid pump device, the fluid pump device comprising an inflow manifold and/or an outflow manifold, each manifold comprising a plurality of fins spaced to smooth the turbulence of a saline liquid flowing therethrough, and at least one chamber through which the saline liquid may flow, the fluid pump device capable of generating a non-impinging motive force to effect the movement and transport of the saline liquid through a piping system in fluid communication therewith; and
a desalination device including a filtration medium for substantially reducing the salinity of the transported saline liquid by separation of a brine therefrom.
2. The system of
a permanent magnet array comprising a plurality of magnet segments arranged such that the resulting magnetic field direction within the chamber is substantially perpendicular to the direction of the saline liquid transport; and
an electrode plate array arranged such that when a DC potential is applied therebetween the resulting electric current density direction is substantially perpendicular to the magnetic field direction and the direction of the saline liquid transport.
3. The system of
a permanent magnet array comprising a plurality of magnet segments of at least approximately N52 strength or greater, the permanent magnet array arranged such that the resulting magnetic field direction within the chamber is substantially perpendicular to the direction of the saline liquid transport; and
an electrode plate array arranged such that when a DC potential is applied therebetween the resulting electric current density direction is substantially perpendicular to the magnetic field direction and the direction of the saline liquid transport.
4. The system of
a neodymium permanent magnet array comprising a plurality of magnet segments arranged such that the resulting magnetic field direction within the chamber is substantially perpendicular to the direction of the saline liquid transport; and
an electrode plate array arranged such that when a DC potential is applied therebetween the resulting electric current density direction is substantially perpendicular to the magnetic field direction and the direction of the saline liquid transport.
5. The system of
an N52 or stronger neodymium permanent magnet array comprising a plurality of magnet segments arranged such that the resulting magnetic field direction within the chamber is substantially perpendicular to the direction of the saline liquid transport; and
an electrode plate array arranged such that when a DC potential is applied therebetween the resulting electric current density direction is substantially perpendicular to the magnetic field direction and the direction of the saline liquid transport.
6. The system of
a monitoring system for adjusting a chamber dimension and/or an electrical current field strength in response to a saline liquid transportation characteristic to establish a desired saline liquid flow rate and/or flow pressure.
7. The system of
8. The system of
9. The system of
11. The method of
providing a permanent magnet array comprising a plurality of magnet segments arranged such that the resulting magnetic field direction within the chamber is substantially perpendicular to the direction of the saline liquid being transported.
12. The method of
providing a permanent magnet array comprising a plurality of magnet segments arranged such that the resulting magnetic field direction within the chamber is substantially perpendicular to the direction of the liquid transport; and
applying a DC potential across an electrode plate array arranged within the chamber such that the resulting electric current density field direction is substantially perpendicular to the magnetic field direction and the direction of the saline liquid being transported.
14. The method of
wherein the desalination device comprises a carbon nanotube filtration matrix.
15. The method of
recovering the desalination brine for subsequent use.
16. The method of
monitoring at least one saline liquid transportation characteristic and adjusting a chamber dimension and/or an electrical current field strength in response to the saline liquid transportation characteristic to establish a desired saline liquid flow rate and/or flow pressure.
17. The method of
generating electricity using a turbine generator receiving motive force from the saline liquid transport flow.
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This application claims the benefit of U.S. provisional patent application Ser. No. 62/285,458, filed Oct. 30, 2015.
Not Applicable
Not Applicable
Not Applicable
Field of the Invention
The present invention relates to liquid transport and desalination technology and, more specifically, to methods and systems for bulk seawater transportation and desalination.
Description of Related Art Including Information Disclosed Under 37 CFR 1.97 and 1.98
Fresh water is a precious resource, vital to the health of humankind. Unfortunately, growing populations and the increased need for water stress the existing natural sources of fresh water so severely that existing aquifers are being depleted. Substantial backup water resources are available in the form of seawater, but must first be desalinated to be useful for cooking, consumption, and irrigation. However, present means for desalinating water is uneconomical and does not scale well. Moreover, desalination typically takes place near coastal areas and the resulting fresh water must be transported long distances inland for use.
Long distance transportation of fresh water in quantities necessary to sustain large populations can be inefficient and costly. This transportation may include use of tractor-trailers water tank trucks, or may include overland piping systems to facilitate movement of the resulting fresh water. Unattended freshwater pipelines also increase the possibility of water theft, especially in drought stricken regions.
Overland water supply pipeline systems are more efficient for movement of large quantities of water, but such systems typically require numerous pumping stations along the various routes to maintain adequate water pressure. These pumping stations commonly utilize centrifugal and/or positive-displacement pumps that are costly, consume substantial energy, and require continuous maintenance due to the numerous moving parts and constant impingement with the liquid. Moreover, unless the liquid being pumped is non-corrosive (for example, fresh water) the materials chosen for such pumps must be able to withstand highly corrosive substances. This further increases the cost of production and operation of such systems.
The transportation of seawater or other high-salinity liquids is not economical and is impractical with current systems due to the corrosion factor with existing pumping technology. Consequently, such liquids must be desalinated close to the source with the resultant fresh water transported to inland regions. However, existing pipelines only transport a limited distance and cannot efficiently reach most drought stricken regions.
The present invention references the work of Takezawa, et al. as described in their work entitled, Operation of the Thruster for Superconducting Electromagnetohydrodynamic Propulsion Ship “YAMAMOTO 1”, which was published in the March 1995 volume of the Mechanical Engineering Scientific Journal, and which is incorporated herein by reference for all necessary purposes. Takezawa, et al. presented proof that an oceangoing ship could be propelled by magnetohydrodynamic (MHD) thrusters. The MHD thrusters utilized by Takezawa, et al. required use of superconducting electromagnets and necessary support structure to generate sufficient magnetic flux to achieve the desired Lorentz force. The present invention relies on the basic underlying principles of physics leveraged by Takezawa, et al., but does so with an entirely unique structure and purpose that does not require superconductivity and the attendant costs and complexities of such systems. The resultant liquid transport technology described and claimed herein effectively contains no moving parts, and would not be subject to ongoing maintenance issues encountered with existing liquid transport technologies.
Further, desalinating high-salinity liquids is currently inefficient and costly when performed in bulk. For example, desalination plants relying on steam distillation encounter tremendous maintenance efforts due to scaling of the distillation components and require enormous energy to operate. Likewise, plants utilizing reverse osmosis technology require enormous energy to push water through the reverse osmosis polyamide membranes. Thus the current combination of inefficient pumping technology and inefficient desalination/filtration technology makes utilization of saltwater for conversion to freshwater out of reach for use by drought stricken regions. The present invention solves these problems and others, as will be understood by one of ordinary skill following a detailed reading and understanding of the accompanying figures, detailed disclosure, and claims.
The present invention may be realized in multiple embodiments. In a first embodiment the invention provides a system for transporting and desalinating a liquid, the system comprising: a saline liquid intake device in fluid communication at least one fluid pump device, the fluid pump device comprising at least one chamber through which the saline liquid may flow, the fluid pump device capable of generating a non-impinging motive force to effect the movement and transport of the liquid therethrough.
In yet another embodiment the fluid pump device further comprises: an inflow manifold adapted to smooth the turbulence of the liquid entering the fluid pump and/or an outflow manifold adapted to smooth the turbulence of the liquid exiting the fluid pump device. In yet another embodiment the fluid pump device further comprises: a permanent magnet array arranged to form at least one chamber therein through which the saline liquid is transported, the permanent magnet array further arranged such that the resulting magnetic field direction within the chamber is substantially perpendicular to the direction of liquid transport; and an electrode plate array arranged within the chamber such when a DC potential is applied therebetween the resulting electric current density direction is substantially perpendicular to the magnetic field direction and the direction of liquid transport.
In another embodiment the fluid pump device further comprises: a permanent magnet array of at least approximately N52 strength or greater, the permanent magnet array arranged to form at least one chamber therein through which the saline liquid is transported, the permanent magnet array further arranged such that the resulting magnetic field direction within the chamber is substantially perpendicular to the direction of liquid transport; and an electrode plate array arranged within the chamber such when a DC potential is applied therebetween the resulting electric current density direction is substantially perpendicular to the magnetic field direction and the direction of liquid transport.
In yet another embodiment the fluid pump device further comprises: a neodymium permanent magnet array arranged to form at least one chamber therein through which the saline liquid is transported, the permanent magnet array further arranged such that the resulting magnetic field direction within the chamber is substantially perpendicular to the direction of liquid transport; and an electrode plate array arranged within the chamber such when a DC potential is applied therebetween the resulting electric current density direction is substantially perpendicular to the magnetic field direction and the direction of liquid transport.
Still another embodiment of the fluid pump device further comprises: an N52 or stronger neodymium permanent magnet array arranged to form at least one chamber therein through which the saline liquid is transported, the permanent magnet array further arranged such that the resulting magnetic field direction within the chamber is substantially perpendicular to the direction of liquid transport; and an electrode plate array arranged within the chamber such when a DC potential is applied therebetween the resulting electric current density direction is substantially perpendicular to the magnetic field direction and the direction of liquid transport.
In another embodiment the fluid pump device further comprises: a desalination device for substantially reducing the salinity of the transported liquid as the liquid flows therethrough. Control of the device is also envisioned. In another embodiment the fluid pump device further comprises: a monitoring system for adjusting a chamber dimension and/or an electrical current field strength in response to a saline liquid transportation characteristic to establish a desired saline liquid flow rate and/or flow pressure.
With regard to the desalination device, the desalination device further comprises a graphene membrane or a carbon nanotube membrane through which the transported liquid flows. In another embodiment the desalination device further comprises a brine recovery outlet for removing brine produced through the desalination process.
Methods of use of the unique system as described herein are also envisioned. In particular, a method for transporting and desalinating a liquid is presented, with the method steps comprising: with at least one fluid pump device, imparting a motive force on a saline liquid through non-impinging means, whereby the liquid is forcibly transported through at least one chamber of the fluid pump device and through a piping system. In other embodiments the method steps further comprise: providing a permanent magnet array arranged around the chamber such that the resulting magnetic field direction within the chamber is substantially perpendicular to the direction of the liquid transport. In another embodiment the method steps further comprise: providing a permanent magnet array arranged around the chamber such that the resulting magnetic field direction within the chamber is substantially perpendicular to the direction of the liquid transport; and applying a DC potential across an electrode plate array arranged within the chamber such that the resulting electric current density field direction is substantially perpendicular to the magnetic field direction and the direction of the liquid transport.
In yet another embodiment, the method steps further comprise: substantially reducing the salinity of the transported liquid through use of a desalination device. In another embodiment the method steps further comprise: substantially reducing the salinity of the transported liquid through use of a desalination device, wherein the desalination device comprises a graphene filtration and/or a carbon nanotube membrane; or recovering the desalination brine for subsequent use. Another embodiment includes the method steps further comprising: monitoring at least one saline liquid transportation characteristic and adjusting a chamber dimension and/or an electrical current field strength in response to the saline liquid transportation characteristic to establish a desired saline liquid flow rate and/or flow pressure.
The present invention will be more fully understood by reference to the following detailed description of the preferred embodiments of the present invention when read in conjunction with the accompanying drawings, wherein:
The above figures are provided for the purpose of illustration and description only, and are not intended to define the limits of the disclosed invention. Use of the same reference number in multiple figures is intended to designate the same or similar parts. Furthermore, if and when the terms “top,” “bottom,” “first,” “second,” “upper,” “lower,” “height,” “width,” “length,” “end,” “side,” “horizontal,” “vertical,” and similar terms are used herein, it should be understood that these terms have reference only to the structure shown in the drawing and are utilized only to facilitate describing the particular embodiment. The extension of the figures with respect to number, position, relationship, and dimensions of the parts to form the preferred embodiment will be explained or will be within the skill of the art after the following teachings of the present invention have been read and understood.
To place the invention in context in order to appreciate its utility, it is helpful to describe an embodiment of a complete system within which the component devices operate. Turning to the drawings for such guidance,
To provide an idea of scale of such systems, a typical water main pipeline is upwards of 48 inches in diameter. A length of water main pipe (106) places a plurality of fluid pump devices (108) in fluid communication with one another and with the pre-filtration and treatment structure (104). At the destination of the delivery pipe is a fluid pump device (108) in combination with a desalination device (112) to form a combined liquid transport and desalination system (110). While it is possible to utilize a single fluid pump device and desalination device to achieve the desire goal, the number of fluid pump devices (108) required is determined by the distance over which the piping system must travel as well as geographic features along the route. For example, if the distance is relatively short but the terrain is steep and uneven, it may be necessary to strategically place additional fluid pump devices (108) along the route to maintain adequate saline liquid flow pressure and flow rate. Use of common flow measurements and overall system functional observation will provide adequate input to one of ordinary skill to make this determination.
Strategic use of surface coatings will reduce or eliminate the buildup of salt deposits within the pipeline, and improve the friction coefficient such that saline liquid flows more readily therethrough. For example, it is possible to coat the inner surfaces in contact with the saline liquid with boron-aluminum-magnesium (BAM) ceramic alloy to create an extremely hard, low friction, surface, which will reduce fluid flow pressure demands. For use in pretreatment facilities at desalination plants, pipes carrying saline liquid could be manufactured with a coating of BAM sprayed onto the inside of pipes at a thickness of approximately 2 microns, which should keep salt deposits from forming on the inside of the pipes, thereby reducing or eliminating the use of chemical anti-scalants.
Consideration of the requirements for generating the Lorentz force to effect transport of the saline liquid can be determined by focus on a single pump chamber, given that each chamber operates in the same manner.
The present embodiment differs markedly and unexpectedly through its use of high-strength permanent magnets for generation of the magnetic field (610). In the present embodiment the permanent magnet material is N52 neodymium.
The embodiment utilizes permanent magnets of N52 strength or greater to generate the necessary non-impinging motive force to effect saline liquid transport. Adjustment of the dimensions for a given magnet strength will allow the overall delivery system to be tuned during operation. For example, saline content of the liquid under transport or other environmental factors (temperature, pressure, etc.) may affect flow rate and pressure. A constant feedback monitoring system may be utilized to adjust electric current field (612) strength and/or chamber distance (d) and/or chamber height (h) (i.e., distance between the magnets) in real time to adjust pump output. Fluid flow and pressure, distance, and electrical current sensors are well understood and readily employed for this purpose. Mechanical actuators may be utilized to control the necessary distance (d) and/or height (h) adjustments. While neodymium magnet materials are preferred, other permanent magnets of equivalent strength are also envisioned herein. Moreover, neodymium or other permanent magnets of lesser strength may be utilized if overall transport and desalination system requirements allow, which can be determined by measurement and monitoring as specified above.
While multiple side-by-side fluid transport chambers are described above, other configurations are possible and limited only by the magnet field strength, electric current field strength, and geometries of the pump chamber materials.
Power requirements for each fluid pump device (208) is relatively minimal, and may be provided from standard reliable means.
In addition to the unique non-impinging motive force generation device, desalination is another important aspect.
A benefit of moving the desalination process to the end of the transport stream is that it reduces the need for large, industrial scale desalination systems. Moreover, no single “mountain of salt” is created due to the desalination process, which given current EPA regulations can be difficult (and costly) to process. Instead, smaller, more manageable amounts of salt brine are created, which may have beneficial secondary uses such as salt used for road maintenance in colder climes, sea salt for consumption, etc.
Another use of the present invention involves power generation. Turbine generators can be placed inside the saline liquid water main pipes between fluid pump device stages, which may then be tapped externally to generate electricity for a remote area of use. If overall system flow is negatively affected, an additional fluid pump device (208) can be placed where the water exits the turbine to bring the flow rate back up to the original velocity it had before entering the turbine.
The invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive. Accordingly, the scope of the invention is established by the appended claims rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Further, the recitation of method steps does not denote a particular sequence for execution of the steps. Such method steps may therefore be performed in a sequence other than that recited unless the particular claim expressly states otherwise.
Sanford, Allan, Hussain, Fazle, Bryson, Christopher
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